US Bridges

State Street over Trib to Carroll Crk

Good

Carroll County, Illinois · 0.1 Mi. W of Il 78 · Structure no. 008610100000000

Built
2002
23 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
400
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

State Street over Trib to Carroll Crk is a concrete culvert carrying State Street over Trib to Carroll Crk in Carroll County, Illinois. It was built in 2002, so it is 23 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 400 vehicles a day, roughly 28% of them trucks, projected to reach 404 by 2046. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesState Street
CrossesTrib to Carroll Crk
Location0.1 Mi. W of Il 78
RouteCity Street 0
Coordinates42.10415, -89.98105
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70.8 US tons
Inventory rating42.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length22 ft (6.7 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2021)
Projected traffic404 by 2046
Trucks28%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was State Street over Trib to Carroll Crk built?

It was built in 2002, making it 23 years old in 2025.

What condition is State Street over Trib to Carroll Crk in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does State Street over Trib to Carroll Crk carry?

About 400 vehicles per day (2021 count), of which roughly 28% are trucks.

How long is State Street over Trib to Carroll Crk?

The structure is 22 ft (6.7 m) long with a longest span of 11 ft (3.3 m).

Who owns State Street over Trib to Carroll Crk?

It is owned by the City or Municipal Highway Agency.